400222101 has 8 divisors (see below), whose sum is σ = 541145664. Its totient is φ = 263056640.

The previous prime is 400222093. The next prime is 400222117. The reversal of 400222101 is 101222004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400222101 - 2³ = 400222093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400222181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 939276 + ... + 939701.

It is an arithmetic number, because the mean of its divisors is an integer number (67643208).

Almost surely, 2^400222101 is an apocalyptic number.

It is an amenable number.

400222101 is a deficient number, since it is larger than the sum of its proper divisors (140923563).

400222101 is a wasteful number, since it uses less digits than its factorization.

400222101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1879051.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 400222101 is about 20005.5517544506. The cubic root of 400222101 is about 736.9426456757.

Adding to 400222101 its reverse (101222004), we get a palindrome (501444105).

The spelling of 400222101 in words is "four hundred million, two hundred twenty-two thousand, one hundred one".